662271 has 4 divisors (see below), whose sum is σ = 883032. Its totient is φ = 441512.

The previous prime is 662267. The next prime is 662281. The reversal of 662271 is 172266.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 662271 - 2² = 662267 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110376 + ... + 110381.

It is an arithmetic number, because the mean of its divisors is an integer number (220758).

2⁶⁶²²⁷¹ is an apocalyptic number.

662271 is a deficient number, since it is larger than the sum of its proper divisors (220761).

662271 is a wasteful number, since it uses less digits than its factorization.

662271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220760.

The product of its digits is 1008, while the sum is 24.

The square root of 662271 is about 813.8003440648. The cubic root of 662271 is about 87.1656245140.

The spelling of 662271 in words is "six hundred sixty-two thousand, two hundred seventy-one".